我目前正在使用DiffUtil类通过ListUpdateCallback
来计算并向适配器分配更新,如下所示:
inner class NotificationCallback(private val onInsert: () -> Unit) : ListUpdateCallback {
override fun onInserted(position: Int, count: Int) {
notifyItemRangeInserted(position, count)
Log.d("NotificationCallback", "onInserted position: $position count: $count")
onInsert()
}
override fun onChanged(position: Int, count: Int, payload: Any?) {
notifyItemRangeChanged(position, count)
Log.d("NotificationCallback", "onChanged position: $position count: $count")
}
override fun onMoved(fromPosition: Int, toPosition: Int) {
notifyItemMoved(fromPosition, toPosition)
Log.d("NotificationCallback", "onMoved from: $fromPosition to: $toPosition")
}
override fun onRemoved(position: Int, count: Int) {
notifyItemRangeRemoved(position, count)
Log.d("NotificationCallback", "onRemoved position: $position count: $count")
}
}
从此代码中可以看到,我正在使用相关方法更新适配器,但是我只想在插入某些内容时运行一些代码。但是,这样做确实可行,因为在插入代码之后可以(并且)调用其他通知方法,这会导致插入某些内容时我正在运行的代码出现问题。理想情况下,我需要知道何时将所有更新分派到适配器,以便以后可以根据需要运行相关代码。有这样的方法或方式知道这一点吗?
我目前的解决方案是使用postDelayed
执行此代码,并希望适配器更新在其运行时已完成。不漂亮,还是不理想!